.day001 {
  .item {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 200px;
    height: 200px;
    border: solid 1px;
  }

  .item1 {
    /*background-image > background-color*/
    /*background-image 不能直接设置纯色, 但可以用linear-gradient(to top, blue, blue)设置*/
    /*background-image: linear-gradient(to top, red, blue), url(./img/e6eb8cc1cd879f9dbed345532f8cbbab.png) !important;*/
    /*background-image: linear-gradient(to top, red, blue);*/
    /*background-image: url(./img/e6eb8cc1cd879f9dbed345532f8cbbab.png) !important;*/
    background: url(../assets/logo.png);
  }

  .item2 {
    border: solid 1px;
    width: 100px;
  }
}